A blood clot recently formed in the suprachiasmatic nucleus of Sam's hypothalamus. Fortunately, the clot was contained and he seems to be doing very well. However, there has been a change in his behavior. What might you expect that change to be?
a. He has problems remembering names and faces.
b. His vision is slightly blurred all the time.
c. He seems to have problems with going to sleep and waking up at normal times.
d. His muscular coordination is not as good as it used to be.
Question 2
Great Aunt Mary has always been a lark, getting up early, working busily during the day and then going to bed relatively early. She recently had a slight stroke, and the only thing that seems different about her is that her normal periods of sleeping and waking have changed. Now, you never know when she will get up or when she will go to bed, and she is often up half the night but sleeping during the day. Given what you have learned about sleep and waking, which one of the following brain areas might have been affected by her stroke?
a. the rubrospinal tract
b. the retinohypothalamic pathway
c. the mesolimbicstriatal pathway
d. the thalamopituitary pathway
Diagram of a cell nucleus
(A) The structure of a neuron, showing the dendrites, nerve cell body, and axon. (B) Photomicrograph
Blood Pressure Cuff
Valves in veins open to permit blood flow, close to prevent backflow.
Control of BP and Blood Flow
Calculate the pH of a solution formed by mixing 120.0 mL of 0.30 M HClO with 1180.0 mL of 0.20 ...